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Day 3 and 4

This commit is contained in:
Gleb Koval 2023-12-05 01:38:49 +00:00
parent dd881355c2
commit c1e195fdcd
Signed by: cyclane
GPG Key ID: 15E168A8B332382C
10 changed files with 609 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
.editorconfig Normal file
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root = true
[*]
end_of_line = lf
insert_final_newline = false
trim_trailing_whitespace = true

5
.vscode/settings.json vendored Normal file
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{
"deno.enable": true,
"deno.lint": true,
"deno.unstable": false
}

14
README.md
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@ -4,8 +4,22 @@ Not really going for points here, just for fun :).
I'll probably try to vary languages a bit to get some variety. I'll probably try to vary languages a bit to get some variety.
## Notes
- I try not to use regex if I can help it (regex kinda takes the fun out of it and is harder to optimise if you are actually going for performance).
- Solutions are tidied up _a bit_, but not a lot. So this is definitely nowhere close being elegant code in a lot of cases.
## Solutions
### [Day 1](day1/) ### [Day 1](day1/)
**Language**: Python 3.12 (generics used) **Language**: Python 3.12 (generics used)
### [Day 2](day2/) ### [Day 2](day2/)
**Language**: Python 3 **Language**: Python 3
### [Day 3](day3/)
**Language**: TypeScript (Deno)
**Note**: This one was re-written because what I initially wrote belongs on [r/programminghorror](https://www.reddit.com/r/programminghorror/).
### [Day 4](day4/)
**Language**: Golang

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day3/eg.txt Normal file
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467..114..
...*......
..35..633.
......#...
617*......
.....+.58.
..592.....
......755.
...$.*....
.664.598..

140
day3/input.txt Normal file
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@ -0,0 +1,140 @@
.......358..........31.....339.....669.............598......328.....575......................447..650..............964...........692........
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297..............726.............................966............*997......165..........25.983............669.............&..992*.......966..
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...........*...&..579......811..708...&.................*........................*....767.......386...........558............708.....=......
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..840/....612.......588.................676..202...................&................@..............................301............632..*....
......................*.........=392.............667..%..........-...............457...134*....................165*.....................728.
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..........38.....*........612...628..............90......513...*............*...........59......+..../....799..268....*.....*.........370...
..........$........./........*.....*.......$...................8.......684=.577..209.........550.............#.....#...529.240..............
.236..............153......163........*.414...........................................549........432............919............81.....-337..
....*.................604......-...631..........879........240.......97...............*.....315....&...720..........610...530...............
.....856...214..236....*.....159.%......738.....-......826....&.272.*.......36.....465.........../.....*...587.......*....*......548..699...
.............*........36..........743.=.../...............*......*..424.................580.#...897.448....*.......833...633.....*...*......
.............963......................542........734.....901...914..........843.............523..........818..................691.....833...

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async function loadInput(filename: string) {
const decoder = new TextDecoder("utf-8");
const contents = await Deno.readFile(filename);
return decoder.decode(contents);
}
function toSubComponents(l: string) {
const components: [number, string][] = [];
let current = "";
let idx = 0;
for (const c of l) {
if (
current.length === 0 ||
!Number.isNaN(Number(current[0])) && !Number.isNaN(Number(c))
) {
current += c;
} else {
components.push([idx - current.length, current]);
current = c;
}
idx++;
}
components.push([idx - current.length, current]);
return components;
}
type Component = [number, number, string];
function isPartNumber(
components: Component[],
component: Component,
) {
return Boolean(
components.find((c) => isAdjacent(component, c) && c[2] !== "."),
);
}
/**
* Checks whether two components are adjacent
* @param c1 First component.
* @param c2 Second component.
*/
function isAdjacent([y1, x1, s1]: Component, [y2, x2, s2]: Component) {
const [l1, l2] = [s1.length, s2.length];
// end x positions
const [x1e, x2e] = [x1 + l1 - 1, x2 + l2 - 1];
return (y1 === y2 - 1 || y1 === y2 + 1) && (
(x1 - 1 <= x2 && x2 <= x1e + 1) ||
(x1 - 1 <= x2e && x2e <= x1e + 1) ||
(x2 <= x1 - 1 && x1e + 1 <= x2e)
) || (y1 === y2) && (x2e === x1 - 1 || x2 === x1e + 1);
}
function gearRatio(
components: Component[],
component: Component,
) {
if (component[2] !== "*") return null;
const numbers = components
.filter((c) => isAdjacent(component, c))
.map(([, , s]) => Number(s))
.filter((n) => !Number.isNaN(n));
if (numbers.length === 2) {
return numbers[0] * numbers[1];
}
return null;
}
async function main() {
const lines = await loadInput("input.txt").then((s) => s.split("\n"));
const components = lines.map(toSubComponents)
.flatMap((cs, idx) => cs.map((c) => [idx, c[0], c[1]] as Component));
const numbers = components.filter(([, , s]) => !Number.isNaN(Number(s)));
const fnumbers = numbers.filter((c) => isPartNumber(components, c));
console.log(
"Part 1:",
fnumbers.map(([, , s]) => Number(s)).reduce((p, c) => p + c),
);
const gears = components
.map((c) => gearRatio(components, c))
.filter((c) => c !== null) as number[];
console.log("Part 2:", gears.reduce((p, c) => p + c));
}
await main();

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Card 1: 41 48 83 86 17 | 83 86 6 31 17 9 48 53
Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19
Card 3: 1 21 53 59 44 | 69 82 63 72 16 21 14 1
Card 4: 41 92 73 84 69 | 59 84 76 51 58 5 54 83
Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36
Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11

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module git.koval.net/cyclane/advent-of-code-2023/day4
go 1.21.4

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day4/input.txt Normal file
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@ -0,0 +1,205 @@
Card 1: 72 42 34 7 30 3 25 63 99 15 | 63 30 64 15 72 55 73 32 75 41 37 77 49 51 95 16 25 3 92 18 87 2 71 28 10
Card 2: 52 89 94 79 81 30 58 77 69 2 | 94 77 35 81 96 52 84 85 69 51 78 24 2 41 37 30 44 57 48 14 33 89 58 5 79
Card 3: 93 12 23 20 64 72 3 32 25 27 | 23 35 36 69 38 12 74 57 20 93 72 41 88 6 25 37 32 76 27 64 81 83 40 3 54
Card 4: 68 36 31 91 12 19 75 32 33 52 | 77 75 12 54 32 59 52 36 19 40 55 31 71 11 84 91 16 7 42 95 68 33 47 67 65
Card 5: 68 39 51 95 10 77 5 36 75 99 | 86 94 1 99 96 68 98 77 25 95 32 20 97 75 28 5 10 51 6 36 14 78 66 29 39
Card 6: 60 53 10 26 45 64 31 88 74 21 | 36 35 11 17 18 47 86 59 28 8 32 21 22 31 77 88 9 16 23 74 26 87 75 95 12
Card 7: 95 93 28 80 39 62 74 91 22 63 | 42 39 33 44 94 52 77 95 38 65 84 92 61 91 73 8 96 51 37 71 58 5 81 22 93
Card 8: 76 7 55 3 95 17 24 23 69 47 | 8 41 67 46 29 18 2 82 86 59 88 22 98 25 95 15 57 26 63 3 36 85 7 24 20
Card 9: 63 60 87 27 47 40 26 38 34 57 | 42 1 28 34 12 98 64 37 33 49 3 87 77 46 26 20 38 4 32 79 45 60 35 57 48
Card 10: 30 16 56 17 48 44 65 76 27 61 | 52 8 35 90 41 64 4 55 77 1 49 80 75 95 16 61 85 31 73 97 93 9 76 66 54
Card 11: 28 7 64 33 13 45 97 24 66 51 | 97 46 24 76 28 31 74 65 13 23 1 30 27 15 3 18 12 51 25 33 64 75 66 7 44
Card 12: 57 89 67 77 23 49 12 96 43 4 | 56 67 25 6 29 34 72 23 41 96 89 61 40 60 87 20 57 46 5 49 69 48 47 10 43
Card 13: 27 58 48 17 10 23 40 79 61 71 | 90 57 48 81 17 1 86 58 23 8 21 20 3 35 29 71 53 78 79 15 60 61 41 22 10
Card 14: 16 8 76 31 64 95 61 14 59 58 | 79 48 62 88 99 82 49 52 66 16 30 1 8 29 98 31 91 38 96 55 51 27 65 93 36
Card 15: 46 39 99 29 88 81 26 42 77 75 | 94 85 34 19 99 54 26 32 56 74 29 28 18 47 81 55 79 17 41 45 46 68 77 4 73
Card 16: 7 10 45 37 11 83 2 78 69 73 | 71 21 32 92 31 25 12 61 19 1 7 20 97 43 64 40 16 55 83 51 53 36 38 69 93
Card 17: 37 8 68 43 21 50 25 4 99 63 | 34 57 66 8 88 16 55 62 32 5 43 19 36 18 12 92 10 73 65 56 77 94 44 39 58
Card 18: 72 99 36 80 48 63 77 75 84 25 | 45 16 71 32 72 64 23 48 88 68 75 77 38 8 84 89 79 41 73 10 51 44 47 29 20
Card 19: 69 78 70 25 84 71 48 52 18 6 | 21 84 13 27 55 34 2 3 14 16 35 44 93 62 46 6 70 99 31 10 68 65 78 61 92
Card 20: 72 8 64 15 20 91 9 73 54 83 | 21 48 56 65 17 44 66 20 68 29 63 30 67 7 18 24 32 85 12 60 11 23 70 35 93
Card 21: 86 13 97 67 60 50 89 56 90 78 | 71 74 38 87 92 39 50 80 61 26 15 53 60 72 46 54 6 7 55 19 37 1 9 20 94
Card 22: 99 41 71 28 23 88 93 94 1 37 | 38 6 79 4 26 47 61 84 52 3 70 43 76 35 32 51 11 49 39 72 60 85 89 25 57
Card 23: 85 24 78 46 99 29 75 55 64 70 | 67 71 16 43 83 47 59 7 34 97 17 62 10 2 36 39 37 38 92 58 42 4 84 3 96
Card 24: 55 60 83 42 8 31 14 30 96 50 | 48 30 88 77 4 29 33 46 21 28 44 71 78 99 84 2 73 45 31 85 9 91 1 86 55
Card 25: 86 39 53 63 74 15 23 16 78 95 | 84 10 32 48 56 92 60 99 37 90 27 96 53 98 19 28 85 49 64 45 59 17 41 24 42
Card 26: 85 27 96 10 6 24 16 15 26 1 | 21 62 61 69 22 81 64 56 95 30 11 76 74 31 73 57 89 27 32 68 67 2 98 71 49
Card 27: 72 99 45 96 53 86 22 92 95 49 | 78 59 30 92 66 95 55 23 85 99 24 45 38 53 79 36 18 70 22 98 47 16 76 49 96
Card 28: 21 35 15 99 47 92 32 64 69 97 | 18 64 2 92 96 57 84 37 34 15 32 36 99 97 69 68 35 43 40 73 21 47 83 67 46
Card 29: 40 88 58 51 2 32 95 26 99 17 | 68 23 7 20 9 64 28 26 72 51 17 65 58 88 87 67 95 21 48 63 32 2 40 99 25
Card 30: 99 65 22 27 36 7 71 54 73 98 | 73 87 35 74 45 68 7 80 4 47 65 71 22 42 91 34 5 62 94 60 23 27 96 89 79
Card 31: 64 26 13 16 63 79 86 88 18 28 | 77 25 80 88 79 30 14 13 65 90 31 28 81 60 18 95 11 39 41 93 82 33 92 96 16
Card 32: 56 82 36 7 6 29 33 90 65 96 | 68 59 25 15 28 20 67 16 51 29 3 11 81 63 84 77 44 41 24 30 33 90 61 72 43
Card 33: 23 59 37 55 3 41 28 17 78 32 | 4 71 66 76 89 93 75 91 88 90 3 17 53 73 28 45 37 60 32 23 58 36 40 22 84
Card 34: 2 18 26 6 49 77 64 59 50 66 | 87 18 41 79 54 26 6 22 27 49 82 83 50 38 44 59 81 36 89 66 15 53 42 9 28
Card 35: 81 48 43 63 21 96 91 68 78 39 | 41 7 82 39 99 46 49 29 48 70 91 25 14 54 87 9 96 4 30 76 28 67 40 73 20
Card 36: 15 66 40 86 77 70 64 30 4 85 | 72 83 81 93 12 97 74 37 15 20 84 28 56 73 92 39 77 70 43 55 58 40 69 2 96
Card 37: 38 22 88 47 39 42 8 9 53 48 | 20 87 9 33 28 31 72 42 74 49 79 4 13 44 77 50 54 81 63 65 36 24 64 26 89
Card 38: 28 72 56 37 77 49 58 57 31 85 | 87 1 97 69 89 45 26 91 96 39 79 46 85 49 25 22 18 35 59 38 23 47 67 53 2
Card 39: 23 86 32 13 71 95 2 96 72 55 | 24 54 80 28 63 39 88 6 38 87 70 23 97 18 52 35 1 61 50 29 58 5 93 21 40
Card 40: 7 45 40 49 94 46 42 53 59 4 | 25 57 76 40 81 11 9 77 43 92 1 61 10 30 47 28 50 31 22 12 84 90 80 74 62
Card 41: 60 79 1 38 65 63 91 25 68 16 | 89 62 70 30 21 84 88 72 6 36 27 80 20 35 85 76 96 18 13 2 12 92 41 64 49
Card 42: 74 42 13 34 14 88 36 4 92 2 | 79 91 47 46 32 66 39 40 24 6 52 31 65 22 71 1 60 96 75 16 69 89 26 41 11
Card 43: 54 35 52 10 78 62 14 26 31 61 | 57 55 27 68 8 49 37 70 51 88 17 25 38 11 22 94 64 99 30 12 92 42 69 18 36
Card 44: 89 80 79 10 39 23 71 4 94 31 | 35 81 20 42 63 89 98 5 48 41 15 6 32 56 51 70 3 95 59 87 62 72 18 38 8
Card 45: 57 25 8 54 47 39 88 9 61 97 | 23 30 13 97 27 52 45 51 82 9 99 86 85 92 70 65 43 41 69 12 90 46 39 21 91
Card 46: 74 39 41 36 98 35 30 44 52 88 | 76 42 17 66 81 71 78 40 93 18 45 36 43 29 95 70 57 26 79 28 98 94 33 12 13
Card 47: 70 61 84 72 4 11 63 3 62 97 | 63 70 88 4 18 24 80 81 56 52 84 2 94 67 41 59 77 62 12 38 60 11 92 15 58
Card 48: 1 70 80 88 71 76 31 98 53 27 | 90 85 45 15 13 23 98 59 37 83 89 91 71 63 82 93 35 32 4 16 64 48 10 58 50
Card 49: 26 45 20 8 85 9 6 97 55 42 | 27 18 68 29 74 59 51 60 87 45 6 67 53 10 72 41 2 84 56 92 30 73 71 42 69
Card 50: 69 1 66 37 88 61 90 58 33 20 | 60 23 71 86 8 95 68 11 67 53 20 35 78 29 48 57 63 69 51 9 43 44 81 25 16
Card 51: 50 30 42 54 28 27 66 26 85 76 | 85 69 68 73 18 49 27 20 16 92 57 37 62 65 75 89 22 99 3 94 31 7 48 70 17
Card 52: 10 93 26 70 17 15 51 90 92 47 | 81 32 4 50 34 2 13 94 33 9 31 35 57 17 86 47 98 85 28 46 7 76 42 83 77
Card 53: 83 36 87 78 79 72 20 99 88 58 | 92 61 4 35 17 36 78 87 25 6 26 97 24 11 89 77 71 39 38 96 22 65 19 10 76
Card 54: 90 13 49 20 35 7 27 46 70 19 | 75 50 84 21 47 56 49 1 41 34 78 86 53 24 36 20 64 13 14 2 16 18 65 54 32
Card 55: 54 7 69 14 56 41 42 65 70 2 | 67 30 4 83 16 12 35 13 92 80 39 52 58 8 15 5 43 29 27 75 53 26 50 89 37
Card 56: 30 6 69 51 65 71 79 35 48 98 | 21 70 11 66 54 42 55 99 18 1 56 63 88 39 86 24 46 67 29 15 44 76 65 37 28
Card 57: 84 79 10 11 50 30 36 65 28 19 | 62 97 7 70 5 9 3 47 20 18 52 35 26 48 59 75 89 91 71 32 34 22 72 16 46
Card 58: 78 9 2 4 14 64 43 34 1 31 | 9 78 61 64 74 43 38 46 20 34 6 84 14 69 2 12 36 42 7 4 51 1 37 31 82
Card 59: 45 81 5 80 50 95 82 16 44 99 | 20 10 55 92 49 39 6 90 81 76 35 54 11 82 80 61 68 23 47 60 88 5 99 96 64
Card 60: 81 26 27 19 54 33 40 11 5 90 | 76 49 33 53 54 79 21 27 35 26 56 11 81 80 5 15 50 90 40 48 87 31 24 19 23
Card 61: 70 65 80 25 30 4 12 71 43 85 | 80 71 97 99 90 27 13 20 16 19 10 61 25 43 49 94 39 4 30 70 12 57 65 85 14
Card 62: 91 52 22 30 60 54 67 83 88 34 | 78 68 37 73 69 92 87 48 44 88 13 91 60 12 72 36 54 14 22 61 67 83 30 52 34
Card 63: 94 41 79 25 24 9 10 42 48 49 | 69 63 66 40 53 94 97 82 80 64 48 99 3 79 41 68 62 30 9 74 59 49 20 52 65
Card 64: 6 68 2 74 31 97 4 71 78 1 | 85 31 78 61 12 71 19 6 4 79 87 15 48 1 27 2 14 29 37 30 97 74 94 68 70
Card 65: 3 56 52 75 44 78 94 87 55 60 | 99 61 1 18 76 23 92 2 43 41 37 93 29 22 19 59 53 17 46 38 13 90 34 9 62
Card 66: 42 76 77 85 81 26 27 38 35 23 | 29 6 25 81 85 89 70 65 30 96 44 91 11 15 60 99 87 27 79 54 7 63 26 76 37
Card 67: 94 13 63 52 10 18 38 80 32 70 | 61 52 8 10 55 80 18 93 15 62 63 32 70 42 2 1 38 13 94 25 59 47 30 91 5
Card 68: 91 60 34 79 36 82 31 43 76 9 | 79 76 60 91 98 64 25 15 24 4 40 31 88 9 97 43 7 19 36 3 87 13 82 34 39
Card 69: 93 70 98 45 55 72 95 66 29 54 | 72 26 55 69 71 95 29 54 93 77 98 73 78 35 94 60 30 10 47 89 59 43 2 8 17
Card 70: 25 74 47 31 15 57 13 67 26 28 | 5 47 85 26 45 89 9 94 78 17 50 52 42 4 72 16 23 67 22 73 58 55 70 32 28
Card 71: 56 4 53 46 94 29 83 30 89 7 | 58 63 84 38 92 21 74 69 30 4 78 89 44 93 40 29 17 52 7 68 47 46 96 82 13
Card 72: 40 90 82 26 33 71 61 77 2 95 | 73 49 89 41 99 91 88 56 44 70 52 54 55 4 93 81 85 6 23 29 64 69 26 18 7
Card 73: 5 19 1 59 68 41 42 63 76 98 | 90 44 72 76 67 21 80 69 29 13 8 54 51 35 70 40 52 89 48 78 84 74 3 22 4
Card 74: 80 76 25 96 50 97 31 65 17 26 | 79 15 91 7 89 4 55 26 14 92 76 25 77 96 72 50 37 13 94 2 6 63 3 35 65
Card 75: 48 44 75 19 64 15 7 84 80 23 | 23 47 24 9 28 18 55 5 30 12 88 74 75 68 19 43 57 73 35 62 97 44 72 54 4
Card 76: 24 58 72 12 78 4 47 26 38 37 | 90 93 34 65 88 48 16 56 13 81 51 59 67 6 28 75 8 85 11 74 47 70 77 41 58
Card 77: 69 1 9 22 48 37 92 23 87 89 | 67 45 38 62 90 13 31 34 2 53 23 16 52 27 8 47 54 88 77 78 73 24 32 95 17
Card 78: 32 2 69 81 63 27 71 40 87 64 | 86 75 53 43 29 44 7 4 78 13 15 80 70 76 96 52 18 24 36 49 31 1 19 9 57
Card 79: 77 75 62 44 93 43 58 36 40 65 | 83 16 49 75 86 25 44 81 77 66 6 96 64 54 32 51 11 95 33 5 19 7 30 38 74
Card 80: 27 25 51 76 78 73 32 26 44 13 | 14 28 50 17 59 5 39 74 15 67 33 8 86 32 40 58 72 68 96 66 1 98 31 65 46
Card 81: 23 80 16 89 92 28 94 8 87 15 | 39 41 85 51 12 58 31 81 26 99 17 77 87 91 84 18 21 52 66 3 98 22 54 76 19
Card 82: 11 8 87 49 66 34 7 92 83 28 | 59 5 10 39 26 81 76 9 61 42 18 20 46 17 77 53 78 88 82 15 21 6 75 64 13
Card 83: 55 37 99 54 46 94 32 15 91 24 | 94 70 68 24 52 65 99 91 8 89 32 48 15 76 73 95 55 78 5 96 26 54 46 37 19
Card 84: 23 80 33 41 81 50 57 78 53 6 | 4 78 66 50 72 53 87 99 74 23 81 18 32 57 6 98 80 39 54 5 41 83 14 86 33
Card 85: 76 83 46 92 6 65 73 3 78 28 | 32 59 26 92 83 65 21 46 64 28 61 50 3 11 29 75 36 20 17 76 73 6 78 91 55
Card 86: 56 50 18 82 63 61 9 95 47 59 | 80 79 74 6 5 25 82 97 61 18 63 21 59 11 32 56 49 65 3 9 95 47 54 50 68
Card 87: 15 2 85 45 33 4 9 24 65 58 | 40 2 98 75 9 41 24 85 78 4 65 15 80 45 58 52 33 32 26 35 51 28 14 56 6
Card 88: 93 35 69 57 8 74 47 39 52 4 | 74 8 64 98 80 86 63 91 93 76 52 24 68 15 39 96 57 97 69 78 4 51 47 35 38
Card 89: 91 8 73 99 75 66 31 43 55 92 | 64 43 25 58 48 91 29 66 20 47 72 75 92 45 36 81 73 55 8 33 13 10 31 99 7
Card 90: 64 8 65 3 29 61 74 7 59 53 | 4 8 67 29 20 97 98 39 95 75 45 74 12 87 53 3 65 31 7 61 55 64 26 59 46
Card 91: 39 70 40 95 23 45 2 18 89 30 | 70 12 64 13 14 18 23 56 5 45 76 73 10 54 81 8 94 83 89 40 49 95 79 92 78
Card 92: 53 30 93 85 86 66 34 35 47 37 | 10 44 41 73 6 34 89 92 30 75 99 87 52 4 21 51 45 59 29 78 67 11 17 68 42
Card 93: 95 3 90 96 73 78 58 55 13 61 | 57 37 26 51 68 64 48 54 24 36 56 25 19 15 17 88 73 55 92 11 74 87 14 35 8
Card 94: 35 13 57 75 85 23 8 49 33 5 | 66 76 20 80 21 33 96 5 49 25 23 88 13 54 24 57 32 62 84 78 60 17 91 8 85
Card 95: 43 77 1 95 38 40 32 68 26 89 | 77 7 65 76 1 37 25 26 12 48 29 89 95 28 96 68 38 40 43 58 57 45 32 67 5
Card 96: 90 22 40 75 80 43 86 34 82 7 | 82 89 7 97 86 69 40 75 34 87 16 65 37 55 57 11 19 85 95 83 71 84 35 90 80
Card 97: 67 12 11 51 56 82 43 18 38 94 | 63 72 48 75 95 14 30 15 68 44 19 73 46 67 88 82 85 35 6 84 78 71 40 24 33
Card 98: 89 64 91 94 98 87 74 68 18 49 | 35 54 21 77 75 38 32 45 46 22 44 4 41 78 27 9 93 25 90 48 57 47 68 30 99
Card 99: 36 16 81 35 91 25 86 50 57 17 | 73 75 18 88 87 8 24 11 25 16 36 59 69 81 68 91 72 78 71 66 1 99 26 86 57
Card 100: 52 71 18 60 6 88 27 33 92 29 | 66 61 80 21 25 8 79 7 41 99 95 43 29 4 93 13 55 37 23 30 72 28 57 26 62
Card 101: 40 8 5 79 92 47 17 48 23 77 | 74 57 65 24 79 52 92 43 10 5 50 40 95 90 71 64 34 15 32 41 63 17 7 26 37
Card 102: 64 77 24 30 8 23 98 75 67 66 | 40 17 69 62 3 21 74 30 8 52 81 42 76 68 75 29 72 19 98 50 15 99 92 49 89
Card 103: 34 9 1 49 90 87 55 86 11 82 | 66 39 3 87 52 81 89 41 99 95 38 54 55 50 27 93 30 91 77 20 29 83 65 88 5
Card 104: 34 10 73 24 15 77 88 95 19 65 | 90 62 70 56 14 8 53 17 81 61 72 13 45 86 71 24 74 76 97 87 23 40 94 41 6
Card 105: 73 47 91 81 55 27 43 80 63 25 | 11 31 44 42 17 93 77 12 96 61 35 53 92 51 18 71 38 9 67 75 58 5 88 72 52
Card 106: 45 52 51 29 16 93 66 96 49 43 | 88 25 58 76 34 54 4 20 81 8 47 65 3 90 94 22 18 41 28 9 21 57 26 70 35
Card 107: 1 12 46 25 11 87 80 82 57 65 | 1 12 17 30 11 95 80 19 22 69 46 82 65 29 34 44 62 57 51 87 25 45 3 23 56
Card 108: 78 12 20 25 16 19 30 93 59 75 | 19 59 79 93 12 92 7 16 20 10 64 89 1 87 62 91 58 38 74 37 72 47 60 27 30
Card 109: 73 8 74 89 18 91 7 93 68 94 | 68 25 56 55 48 74 12 91 43 93 18 94 19 65 95 67 54 42 8 52 82 69 89 7 45
Card 110: 40 59 97 13 34 9 1 7 87 28 | 70 97 71 1 60 20 86 40 44 77 87 4 9 16 34 73 38 39 28 59 96 13 21 78 7
Card 111: 29 60 63 68 4 7 45 46 13 90 | 78 32 2 29 86 47 28 14 5 18 31 59 46 68 64 97 45 55 91 63 90 60 92 93 7
Card 112: 9 25 58 91 81 28 52 99 73 13 | 1 95 60 59 10 12 17 78 11 34 41 35 6 49 64 75 82 3 58 67 14 54 57 28 55
Card 113: 73 14 18 93 70 92 90 65 9 91 | 95 69 6 36 80 56 10 33 48 47 34 58 57 7 83 24 37 26 19 86 76 31 15 35 64
Card 114: 37 62 48 26 58 21 65 25 24 78 | 93 40 52 24 25 19 77 83 57 43 38 62 39 21 10 36 76 20 26 60 37 15 16 65 45
Card 115: 48 30 97 47 75 92 54 7 22 50 | 48 21 54 13 78 17 31 75 92 14 7 20 22 97 30 35 11 77 18 47 45 70 50 69 5
Card 116: 82 21 15 60 81 39 29 10 66 22 | 71 66 40 82 65 23 18 29 21 30 68 43 10 60 67 22 11 15 62 39 69 85 31 2 81
Card 117: 54 50 61 78 99 47 26 44 38 87 | 68 89 64 78 39 11 91 24 26 50 45 74 73 27 87 44 82 47 38 33 67 51 13 3 54
Card 118: 37 53 91 15 79 31 74 9 58 80 | 97 70 28 13 11 79 2 50 69 93 94 12 7 54 14 62 65 40 64 22 59 19 90 10 36
Card 119: 72 96 41 97 17 33 4 81 29 7 | 38 29 47 81 20 17 72 25 4 36 24 33 93 30 49 7 34 52 78 28 41 98 96 56 97
Card 120: 64 7 82 45 92 26 6 47 53 70 | 83 53 63 2 90 81 78 69 11 86 68 5 42 98 37 70 59 75 82 44 40 87 55 43 95
Card 121: 93 90 20 87 23 17 67 74 16 50 | 93 40 43 51 65 69 32 39 10 56 22 99 64 7 37 3 4 61 9 63 92 31 70 35 46
Card 122: 90 15 66 36 47 22 34 2 48 74 | 41 76 38 3 37 84 45 57 96 59 67 47 20 4 93 55 80 18 6 58 72 75 21 7 71
Card 123: 36 51 45 54 40 50 99 78 19 69 | 35 1 68 98 51 65 45 83 95 27 78 91 44 22 48 96 33 79 14 77 88 36 26 54 40
Card 124: 52 80 2 38 6 79 69 12 42 84 | 76 82 11 57 42 38 64 65 81 28 93 23 61 69 75 17 22 9 70 41 30 26 24 59 44
Card 125: 28 15 71 21 45 90 69 99 67 19 | 80 25 23 33 88 86 62 21 5 41 66 20 63 47 76 94 99 9 7 18 31 12 68 83 81
Card 126: 6 83 28 97 66 88 20 30 37 98 | 35 15 39 5 68 38 59 90 11 37 24 82 79 54 22 52 87 9 80 49 76 1 29 23 14
Card 127: 62 33 80 58 34 82 79 50 13 35 | 23 89 99 27 56 64 93 66 29 2 41 86 39 36 16 49 88 22 90 17 72 19 44 46 25
Card 128: 31 97 54 98 68 44 66 21 12 64 | 56 17 41 96 13 20 98 49 16 24 58 10 32 19 38 91 69 67 2 57 48 55 47 4 28
Card 129: 11 31 45 56 28 66 97 69 63 95 | 22 52 1 41 90 77 42 39 62 6 12 61 78 10 2 23 59 48 86 96 33 53 50 46 4
Card 130: 18 30 26 93 24 60 31 40 85 83 | 6 83 18 82 24 63 60 41 43 93 22 30 72 85 29 77 12 84 40 16 61 26 9 31 89
Card 131: 32 16 18 79 55 23 85 67 83 62 | 18 67 96 62 98 5 10 94 72 66 50 55 32 63 93 23 90 85 25 79 8 16 30 83 39
Card 132: 9 30 32 89 54 7 68 75 85 44 | 13 30 94 73 50 21 97 9 85 54 16 38 8 84 20 32 41 25 61 66 90 77 7 3 89
Card 133: 33 36 25 13 44 82 70 87 31 42 | 22 36 17 87 74 26 70 80 25 13 27 33 12 52 46 82 86 16 15 44 21 42 31 96 88
Card 134: 26 4 44 47 89 97 62 72 57 2 | 57 39 66 72 68 11 47 91 2 6 71 31 81 62 15 65 63 40 10 89 44 14 3 38 16
Card 135: 74 25 37 34 15 97 79 55 33 36 | 62 30 34 97 74 55 61 86 54 79 32 25 24 33 14 35 26 27 37 89 15 20 36 69 47
Card 136: 5 35 2 29 40 56 30 20 19 4 | 65 26 55 59 94 36 78 12 13 4 6 75 53 45 63 42 67 37 41 89 54 23 86 46 58
Card 137: 56 64 48 82 59 99 72 53 7 71 | 38 16 27 93 80 12 44 40 63 57 73 41 86 42 55 50 37 36 26 51 11 94 83 20 4
Card 138: 9 41 6 31 7 96 54 67 91 60 | 61 78 89 16 92 64 66 30 58 70 85 23 10 97 11 63 83 36 86 25 6 54 45 17 69
Card 139: 34 30 44 64 37 41 46 49 42 94 | 19 12 22 81 8 15 48 2 47 99 93 9 55 98 62 42 37 36 87 77 92 71 34 25 44
Card 140: 88 45 37 47 62 46 79 5 35 18 | 8 94 3 64 5 95 19 15 41 14 43 20 57 63 35 89 69 81 68 18 45 11 62 2 77
Card 141: 20 40 14 84 69 72 77 97 24 98 | 57 75 64 90 71 95 37 21 55 43 4 98 18 41 2 68 30 20 53 13 27 19 38 89 29
Card 142: 31 76 56 50 12 11 83 29 39 27 | 97 80 20 37 49 51 35 71 19 43 84 89 40 13 72 34 59 77 32 98 30 86 9 25 60
Card 143: 46 8 62 31 75 50 56 22 69 93 | 90 69 91 22 7 21 14 40 17 58 71 87 82 95 43 83 93 49 60 39 61 37 26 18 19
Card 144: 56 58 52 82 31 13 94 26 51 8 | 62 36 54 65 59 4 20 63 6 1 44 93 96 48 57 23 18 34 88 17 35 91 28 71 25
Card 145: 66 55 61 68 13 67 94 43 30 40 | 45 42 38 54 56 34 8 76 26 75 58 37 60 83 46 40 12 64 94 13 48 90 77 71 92
Card 146: 48 26 45 13 82 78 42 53 10 43 | 10 71 22 18 29 9 53 16 8 74 59 63 23 24 68 34 51 79 33 70 84 95 15 17 69
Card 147: 72 62 31 87 90 79 85 88 92 66 | 24 99 82 42 28 34 47 55 25 3 73 64 93 19 11 57 53 38 10 48 76 37 27 60 44
Card 148: 93 38 70 11 87 94 65 81 21 6 | 35 68 36 86 40 29 44 12 2 53 5 85 73 31 45 76 80 52 69 56 25 54 14 16 90
Card 149: 31 52 17 65 41 9 66 5 16 93 | 7 86 8 38 87 35 33 73 68 81 1 6 2 77 60 50 62 70 20 18 95 3 97 91 42
Card 150: 11 57 95 18 5 26 4 44 59 38 | 4 13 60 93 28 17 63 1 97 79 51 49 18 23 53 16 86 45 7 21 56 55 39 65 70
Card 151: 39 36 85 7 88 10 72 97 90 27 | 98 6 10 92 12 99 68 82 42 97 75 5 36 46 35 37 38 88 90 29 23 74 9 56 52
Card 152: 62 56 21 95 54 7 59 84 63 67 | 54 68 88 28 93 52 76 62 64 44 70 90 6 7 95 56 96 87 85 21 67 75 27 82 91
Card 153: 62 31 71 79 15 12 9 57 93 91 | 44 16 58 6 49 88 52 14 57 28 23 79 72 40 17 29 18 22 42 81 37 91 4 97 3
Card 154: 53 70 76 62 19 41 52 69 5 24 | 76 52 38 11 19 67 41 23 91 53 5 24 12 16 7 70 65 37 42 22 62 2 20 35 32
Card 155: 79 63 21 73 65 57 18 27 13 87 | 59 70 98 85 22 25 13 21 95 10 4 17 8 79 77 92 3 33 36 64 58 51 84 97 15
Card 156: 38 68 83 76 26 57 90 64 1 15 | 42 71 74 3 13 21 27 75 28 59 91 51 70 57 99 54 39 73 8 30 62 68 85 92 18
Card 157: 60 1 88 97 76 28 81 66 16 39 | 81 2 61 16 45 33 79 71 90 3 26 58 70 54 1 39 86 88 25 48 47 56 24 40 82
Card 158: 88 28 41 16 95 70 5 94 9 51 | 4 83 15 41 63 94 98 45 32 12 39 75 38 1 64 96 18 9 51 71 95 27 6 10 50
Card 159: 30 46 69 86 50 15 56 88 59 70 | 77 65 53 49 12 31 18 7 94 59 70 3 17 79 72 14 74 57 96 37 21 47 58 50 68
Card 160: 86 44 41 13 16 24 67 2 48 7 | 87 26 34 63 10 52 66 97 64 46 33 4 70 53 61 94 8 13 9 39 14 49 30 75 43
Card 161: 15 46 36 78 41 86 87 92 49 80 | 7 61 58 53 56 33 43 75 6 79 52 25 94 66 90 95 1 48 8 68 72 91 42 34 19
Card 162: 27 98 46 22 87 10 97 18 5 58 | 56 21 62 64 72 48 26 4 54 52 14 63 84 59 37 28 73 99 47 44 82 69 71 81 76
Card 163: 65 8 26 79 35 82 18 75 40 76 | 58 67 84 4 33 74 38 80 89 1 99 55 92 94 69 34 48 52 98 42 32 64 54 88 37
Card 164: 99 15 46 52 23 28 13 72 17 78 | 41 59 97 94 79 95 38 18 64 70 96 77 21 9 66 28 78 90 58 29 71 52 11 2 74
Card 165: 73 39 26 4 67 65 79 22 89 78 | 33 79 70 13 65 94 75 17 22 89 26 67 10 86 28 4 71 38 48 19 45 46 15 59 55
Card 166: 62 85 90 76 53 33 99 32 55 71 | 66 28 87 67 26 80 70 57 16 54 97 38 43 74 19 23 60 72 71 92 37 17 61 46 42
Card 167: 2 71 49 13 39 91 35 14 24 23 | 89 2 72 76 55 23 37 24 66 13 75 56 7 14 39 45 91 49 22 17 19 35 47 41 57
Card 168: 71 51 7 15 99 28 95 70 86 57 | 74 42 73 47 96 5 46 39 76 71 1 94 85 41 67 6 12 69 72 98 18 81 36 59 21
Card 169: 96 3 10 7 70 85 44 33 74 28 | 48 91 61 7 3 85 19 26 90 33 74 96 58 4 13 28 40 31 77 70 44 14 41 10 54
Card 170: 6 29 84 58 93 28 12 74 16 81 | 48 30 98 19 52 2 65 78 4 41 56 35 90 92 12 38 50 17 79 45 51 74 5 88 40
Card 171: 80 82 69 36 31 86 39 7 62 9 | 76 65 36 46 83 17 70 42 62 39 38 9 85 94 66 7 31 86 29 19 80 24 79 82 52
Card 172: 40 45 78 95 18 54 11 52 51 8 | 78 23 90 13 55 40 93 64 63 28 62 58 51 74 65 29 25 69 98 96 85 11 45 37 71
Card 173: 52 13 74 71 73 1 40 76 64 23 | 59 26 48 87 63 16 29 90 3 45 57 67 70 22 1 11 51 24 18 93 95 89 7 86 17
Card 174: 16 22 71 10 78 57 89 41 98 29 | 67 52 9 21 19 15 47 55 42 62 25 38 87 97 61 91 44 80 3 4 95 66 23 39 99
Card 175: 56 53 6 45 5 42 22 59 84 87 | 34 97 63 59 62 47 88 50 75 45 5 26 65 52 25 39 87 68 4 42 13 38 33 19 77
Card 176: 90 63 13 55 52 5 58 70 32 3 | 76 25 32 27 26 5 44 80 14 9 98 39 78 43 24 55 99 47 95 36 72 93 74 16 60
Card 177: 43 79 88 49 34 42 69 83 11 94 | 76 34 28 72 8 14 82 74 67 56 17 53 46 81 69 93 73 78 29 10 41 7 2 94 89
Card 178: 39 29 85 95 63 87 52 16 33 90 | 88 76 1 12 81 38 72 77 19 46 11 2 44 85 71 24 57 25 28 69 97 37 98 94 50
Card 179: 82 36 61 27 71 84 93 48 16 8 | 19 81 37 1 69 77 90 91 40 66 26 4 46 61 83 98 25 73 23 10 85 52 58 56 59
Card 180: 10 53 55 47 40 51 28 27 6 8 | 89 18 44 17 32 86 71 1 87 50 33 94 97 98 29 74 66 56 12 52 84 99 75 83 69
Card 181: 79 27 56 9 80 31 37 75 62 15 | 81 20 28 43 83 72 52 90 95 39 25 57 59 13 3 12 70 66 34 78 74 44 6 35 48
Card 182: 48 96 21 97 45 7 73 3 51 46 | 34 10 41 89 46 24 48 38 3 97 31 51 86 77 21 81 22 45 37 43 73 96 7 11 91
Card 183: 62 89 20 66 77 45 14 96 59 93 | 51 14 97 93 78 49 66 71 20 77 79 62 56 3 18 23 45 55 70 39 59 96 32 89 52
Card 184: 79 43 66 27 76 70 21 71 19 20 | 49 79 21 12 66 71 98 45 43 94 65 36 54 92 37 70 82 20 32 61 60 76 19 58 27
Card 185: 91 40 88 1 15 86 47 42 9 25 | 38 5 40 82 15 63 29 25 91 9 10 66 47 42 1 88 81 50 90 86 98 65 7 24 39
Card 186: 93 94 57 29 81 56 67 86 42 12 | 71 79 86 39 72 67 77 12 64 56 93 94 90 34 41 60 81 65 82 29 16 17 42 57 78
Card 187: 97 76 22 51 85 78 13 28 72 48 | 45 13 62 51 88 78 85 93 99 68 84 48 97 38 1 75 76 11 60 72 91 22 70 3 28
Card 188: 88 60 55 48 93 86 11 39 52 40 | 86 96 11 88 55 72 74 1 40 8 52 48 85 61 81 39 17 9 56 69 93 57 7 60 73
Card 189: 55 92 80 81 19 1 5 57 77 91 | 32 2 87 77 64 36 91 65 73 54 3 88 57 4 92 5 55 47 8 96 1 19 81 41 80
Card 190: 97 13 22 50 7 96 9 69 71 87 | 66 85 20 57 83 69 6 41 24 30 33 46 73 62 52 13 59 97 8 16 58 22 76 54 95
Card 191: 30 45 49 52 89 95 81 50 79 54 | 52 22 71 89 63 75 33 80 37 26 7 54 94 83 50 45 32 81 79 62 95 77 19 49 36
Card 192: 19 65 84 6 8 60 11 68 57 98 | 57 11 84 75 67 65 41 45 95 31 15 83 50 20 3 52 98 58 8 51 60 78 77 6 94
Card 193: 23 13 3 52 40 44 18 54 88 63 | 79 71 3 96 76 97 51 39 7 18 65 38 13 99 16 92 37 4 67 42 23 44 24 50 21
Card 194: 14 18 25 52 51 69 40 9 39 10 | 76 98 45 21 53 24 13 62 17 81 6 99 39 60 70 50 30 33 58 49 18 56 2 27 63
Card 195: 89 74 91 81 24 79 99 94 75 5 | 67 36 12 98 11 95 76 63 20 28 38 6 42 87 64 48 10 54 53 58 60 34 35 43 31
Card 196: 29 83 5 90 63 25 84 53 64 72 | 29 95 11 39 81 24 27 48 36 28 87 3 66 65 96 47 77 13 84 21 68 55 51 16 23
Card 197: 84 59 32 44 20 75 28 97 86 81 | 32 23 11 2 55 81 79 84 8 59 40 46 66 94 64 91 97 1 45 58 33 29 20 86 44
Card 198: 23 56 48 77 39 3 49 65 96 58 | 22 60 46 87 84 92 78 79 59 25 58 33 89 23 57 81 64 40 27 9 65 5 61 54 4
Card 199: 68 34 40 51 99 79 71 61 8 91 | 97 46 35 38 20 29 41 84 44 2 72 23 17 65 53 94 66 74 4 13 62 68 21 75 6
Card 200: 64 57 12 2 31 81 51 92 58 5 | 40 39 8 99 23 90 2 41 31 75 32 83 9 82 33 76 35 95 5 84 67 7 48 55 98
Card 201: 94 22 71 33 19 55 39 51 29 44 | 86 59 4 77 67 66 40 37 96 64 34 72 60 30 83 28 57 85 50 31 29 97 38 15 49
Card 202: 60 61 91 66 26 49 86 19 27 97 | 80 21 43 40 64 85 32 42 20 74 84 54 39 62 90 89 11 17 71 59 50 45 51 63 72
Card 203: 41 5 59 9 93 28 82 80 89 24 | 47 88 66 39 26 50 32 24 84 19 42 25 96 86 8 91 20 57 67 14 77 23 16 11 73
Card 204: 85 56 67 47 39 52 96 97 42 72 | 49 58 17 24 62 14 43 30 69 82 34 68 80 50 23 28 84 53 99 22 16 27 83 5 57
Card 205: 54 17 93 26 35 9 61 49 81 42 | 94 14 76 52 15 18 38 41 69 28 16 31 73 32 47 37 71 23 82 90 33 75 24 85 11

134
day4/main.go Normal file
View File

@ -0,0 +1,134 @@
package main
import (
"errors"
"fmt"
"os"
"strconv"
"strings"
)
func noErr(err error) {
if err != nil {
panic(err)
}
}
func main() {
// parsing
input, err := os.ReadFile("input.txt")
noErr(err)
lines := strings.Split(string(input), "\n")
cards := make([]Card, len(lines))
cardCounts := map[int]int{}
for idx, l := range lines {
card, err := LineToCard(l)
noErr(err)
cards[idx] = card
cardCounts[card.Id] = 1
}
// part 1
s := 0
for _, c := range cards {
s += c.Points()
}
println("Part 1:", s)
// part 2
t := 0
for _, c := range cards {
t += cardCounts[c.Id]
for n := 1; n <= c.Wins(); n++ {
_, exists := cardCounts[c.Id+n]
if exists {
cardCounts[c.Id+n] += cardCounts[c.Id]
}
}
}
println("Part 2:", t)
}
type Card struct {
Id int
WinningNs []int
MyNs []int
}
func (card Card) Wins() int {
c := 0
for _, w := range card.WinningNs {
for _, n := range card.MyNs {
if w == n {
c++
}
}
}
return c
}
func (card Card) Points() int {
// math.Pow with into to float conversion feels wrong
p := 1
for _, w := range card.WinningNs {
for _, n := range card.MyNs {
if w == n {
p *= 2
}
}
}
if p == 1 {
return 0
}
return p / 2
}
var NoCutErr = errors.New("no cut found")
func LineToCard(line string) (Card, error) {
cardIdStr, nStr, f := strings.Cut(line, ":")
if !f {
return Card{}, fmt.Errorf("cut ':': %w", NoCutErr)
}
_, idStr, f := strings.Cut(cardIdStr, " ")
if !f {
return Card{}, fmt.Errorf("cut ' ': %w", NoCutErr)
}
id, err := strconv.Atoi(strings.TrimSpace(idStr))
if err != nil {
return Card{}, fmt.Errorf("card id: %w", err)
}
cardNStrs, myNStrs, f := strings.Cut(nStr, "|")
if !f {
return Card{}, fmt.Errorf("cut '|': %w", NoCutErr)
}
cardNs, err := strToNumbers(cardNStrs)
if err != nil {
return Card{}, fmt.Errorf("card ns: %w", err)
}
myNs, err := strToNumbers(myNStrs)
if err != nil {
return Card{}, fmt.Errorf("my ns: %w", err)
}
return Card{
Id: id,
WinningNs: cardNs,
MyNs: myNs,
}, nil
}
func strToNumbers(str string) ([]int, error) {
nStrs := strings.Split(str, " ")
ns := make([]int, 0)
for _, nStr := range nStrs {
if nStr == "" {
continue
}
n, err := strconv.Atoi(strings.TrimSpace(nStr))
if err != nil {
return nil, err
}
ns = append(ns, n)
}
return ns, nil
}